NPPES file of Aug 9, 2026

Catherine E. Grimsley, MSN PMHNP-BC

Psychiatric/Mental Health Nurse Practitioner · Sioux City, IA

Catherine E. Grimsley, MSN PMHNP-BC is a psychiatric/mental health nurse practitioner with a practice address in Sioux City, Iowa, and NPI 1609543933, issued on Aug 25, 2021. Check the license (Iowa G164736, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1609543933
Name
Catherine E. Grimsley
Credential
MSN PMHNP-BC
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
G164736 IA
Self-reported in NPPES; status is on the state search
Practice location
4230 Hamilton Blvd, Sioux City, IA 51104
Phone
(712) 239-4300
Enumerated
Aug 25, 2021
Record last updated
Feb 27, 2026
Fax
(712) 239-2866
Medicare enrollment
Enrolled (PECOS I20210903000171); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest psychiatric/mental health nurse practitioner records → All 612 in Iowa → Look up another NPI →

Also registered at 4230 Hamilton Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Maureen Fisher, PACMedical Physician Assistant1023066610
  2. Michael Harder, D.O.Family Medicine Physician1427064146
  3. Joseph Kurth, MDFamily Medicine Physician1093911372
  4. Terry Mitchell, MDFamily Medicine Physician1720053796
  5. Courtney Rasmussen, ARNPFamily Nurse Practitioner1003301409
  6. John Roberts, MDFamily Medicine Physician1164497137

Verify Catherine E. Grimsley in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Iowa board licenses this profession
    Search for license G164736    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Iowa license search

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18% more Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024

1,070 Medicare Part D claims for 70 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.

  1. Catherine Grimsley1,070
  2. Specialty average906

Most prescribed

  1. Trazodone Hcl66 claims
  2. Fluoxetine Hcl56 claims
  3. Desvenlafaxine Succinate Er55 claims
  4. Escitalopram Oxalate55 claims
  5. Trintellix53 claims
  6. Bupropion Xl44 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $522.21

29 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Catherine Grimsley$522.21
  2. Specialty average$1,027.77

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Family Health Care OF Siouxland PLCSioux City, IA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Catherine E. Grimsley among 612 psychiatric/mental health nurse practitioner records in Iowa

Catherine E. Grimsley, MSN PMHNP-BC is one of 612 psychiatric/mental health nurse practitioner records with a practice address in Iowa. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 52% of them.

  • NPI issued2021 · 52% of these records are older, 38% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2021 · median 2021 among the 398 with a school on file
  • Record last updated2026 · 28% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

19 psychiatric/mental health nurse practitioner records list a practice address in Sioux City

They are 19 of the 1,486 NPPES records with a practice address in Sioux City, and 612 psychiatric/mental health nurse practitioner records in Iowa.

All 612 in Iowa → Every provider in Sioux City → Psychiatric/Mental Health Nurse Practitioner nationwide →

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Kelsey Bauer, PMHNPSioux City, IA 511031114681889
  2. Cynthia Johnson, ARNPSioux City, IA 511051023555638
  3. Laura Meyer, ARNP, PMHNPSioux City, IA 511051154001402
  4. Erin Hodgson, DNP, ARNPSioux City, IA 511061013516566
  5. Dina Irwin, PMHNPSioux City, IA 511061033890918
  6. Monsurat AdelekeSioux City, IA 511011669308433
  7. Ashley Anderson, PMHNP-BCSioux City, IA 511011881499242
  8. Brenda Cain, PMHNP-BCSioux City, IA 511011104498039

Common questions

What is Catherine E. Grimsley, MSN PMHNP-BC's NPI number?

Catherine E. Grimsley, MSN PMHNP-BC's National Provider Identifier (NPI) is 1609543933, issued on Aug 25, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Catherine E. Grimsley, MSN PMHNP-BC located?

The NPPES record lists a practice address at 4230 Hamilton Blvd, Sioux City, IA, 51104. Phone: (712) 239-4300. Providers update this record themselves, so call before visiting.

How can I verify Catherine E. Grimsley, MSN PMHNP-BC's license?

NPPES lists Iowa license number G164736, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.

How much does Catherine E. Grimsley, MSN PMHNP-BC prescribe under Medicare Part D?

In 2024, Catherine E. Grimsley, MSN PMHNP-BC had 1,070 Medicare Part D claims for 70 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.